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The Quantitative Determination of Food Dyes in Powdered Drink Mixes. A High School or General Science Experiment
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Abstract
A simple spectrophotometric procedure for the quantitative determination of FDandC food dyes in powdered drink mixes appropriate for high school or general science classes is presented. This method describes the determination of the total quantity of food dye, the quantity of dye per serving, and the percent by mass of each dye in the sample. Directions for the creation of food dye calibration curves is also presented. Lab time required is two–three hours.
Keywords (Audience):
High School / Introductory ChemistryKeywords (Domain):
Laboratory InstructionKeywords (Pedagogy):
Hands-On Learning / ManipulativesKeywords (Subject):
Aqueous Solution ChemistryCiting Articles
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This article has been cited by 5 ACS Journal articles (5 most recent appear below).
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Similar Articles about the Absorbance of Colored Drinks
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Dale E. Wheeler and Samuella B. SigmannJournal of Chemical Education2008 85 (9), 1194Two recent Journal articles are very similar in their reported findings; the second of these appears to present no new findings and is missing important concepts needed for the stated conclusions.
Reply to Similar Articles about the Absorbance of Colored Drinks
Karen E. StevensJournal of Chemical Education2008 85 (9), 1194Reply to Similar Articles about the Absorbance of Colored Drinks
Karen E. StevensJournal of Chemical Education2008 85 (9), 1194Concern over the calibration of food dyes can be mitigated by using Kool-Aid packets from the same lot number.
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- Received: August 03, 2009
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